Modern portable gravimeters can routinely achieve a 5 ugal uncertainty with careful measurement procedures involving multiple station occupations in the same day, and stacking of readings over at least 15 minutes during each occupation. Although further improvements in gravimeter accuracy are feasible, other practical factors relating to repeat surveys of geothermal fields make such improvement...

Gravimetry from a combination of INS and GPS measurements is well known and investigated since several years. The main application is in the field of airborne gravimetry, where the results can be used to fill the spectral gap between spaceborne gravity field data (from satellite missions such as CHAMP, GRACE or GOCE) and terrestrial data available from regional or continental gravity networks. ...

Precision measurements of gravity can provide tests of fundamental physics and are of broad practical interest for metrology. We propose a scheme for absolute gravimetry using a quantum magnetomechanical system consisting of a magnetically trapped superconducting resonator whose motion is controlled and measured by a nearby RF-SQUID or flux qubit. By driving the mechanical massive resonator to ...

Advances in accelerometer technology promisemany orders ofmagnitude improvement in sensitivity; which, consequently, also suggest progress in Earth Science applications, such as through new airborne gravimetric systems. However, a new capability for one sensor then usually demands commensurate requirements from auxiliary sensors in order to realize its full potential. Specifically, airborne gra...

The measurement of Earth’s gravitational field is important in geophysics, geodynamics, geodesy, oceanography, and space science. ocean covers 71% the earth’s surface; therefore, measuring ocean’s crucial. Compared with shipborne gravimetry, underwater gravimetry near seafloor closer to gravity sources can obtain short-wavelength information that useful for small-scale deposit detection seawate...